CN106706501B - A kind of measurement system and method for dilative soil saturation coefficient of transmissibility - Google Patents
A kind of measurement system and method for dilative soil saturation coefficient of transmissibility Download PDFInfo
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- 239000008400 supply water Substances 0.000 claims description 5
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The present invention relates to a kind of measurement system and method for dilative soil saturation coefficient of transmissibility, it include: that Markov bottle lower end exit is connect by aqueduct with the bottom of organic glass earth pillar, it is capable of the air-dried soil sample of free wxpansion in earth pillar after filling water suction, it is connect by aqueduct with graduated graduated cylinder at the top of organic glass earth pillar, and the stopwatch of record time, organic glass earth pillar is the organic glass earth pillar of multiple and different height, the soil sample of the different soil properties of soil sample in each organic glass earth pillar is layered filling, forms multiple soil layers.The present invention is saturated the principle that coefficient of transmissibility changes with the increase of thickness of soil according to dilative soil, select a series of organic glass earth pillar of different heights, load the pedotheque of different-thickness, the measurement of water saturation is carried out one by one, by the calculating of the parameters such as the water yield measured to each organic glass earth pillar and flowing-out time, the final accurate saturation coefficient of transmissibility calculated at determining dilative soil section different depth.
Description
Technical field
The present invention relates to a kind of measurement system and method for dilative soil saturation coefficient of transmissibility, be a kind of experimental system and
Method is a kind of hydrological experiment system and method.
Background technique
Soil saturation coefficient of transmissibility refers to that after soil is sufficiently saturated by moisture, the unit time is single under the effect of unit head
The water permeated in plane product.Soil saturation coefficient of transmissibility is important one of the physical property of soil, reflects infiltrating for soil
And seepage property, it is related with soil porosity, the soil texture, soil swelling rate etc..It is the flux for calculating water in soil profile
It is irrigated with design, the important parameter in the important parameter and hydrological model of drainage system engineering.It is tight whether it accurate
The precision of model is affected again.Currently, non-expansibility soil saturation coefficient of transmissibility measuring method is mature, and method for measuring has
Determine head method and variable water level method etc..But unexpansive soil saturation coefficient of transmissibility measuring method is difficult to meet to swelling weak rock
The Accurate Determining of earth saturation coefficient of transmissibility.By soil swelling power, soil body self gravity and upper layer of soil to lower soil pressure
It influences, dilative soil coefficient of transmissibility changes with the increase of thickness of soil.Soil swelling deformation mainly by soil swelling power and
Weight stress influences, and soil saturation coefficient of transmissibility is caused to deform with the variation of depth of soil.It measures at different depth every bit
Coefficient of transmissibility is time-consuming and laborious, it is also difficult to accomplish.Currently, dilative soil thickness also locates saturation coefficient of transmissibility influential effect research
In probe phase, related assays system and method are had not been reported.Therefore, it is necessary to develop a kind of dilative soil saturation coefficients of transmissibility to survey
System and method are determined, accurately to determine saturation coefficient of transmissibility of the dilative soil at different depth.
Summary of the invention
In order to overcome the problems of the prior art, the invention proposes a kind of measurement systems of dilative soil saturation coefficient of transmissibility
System and method.The system and method respectively carry out the soil soil sample of multiple and different thickness by way of soil layering
Soil saturation test can be determined accurately by measuring a series of saturation coefficient of transmissibility of obtained different-thickness soil
Coefficient of transmissibility is saturated at dilative soil section different depth.
The object of the present invention is achieved like this: a kind of measurement system of dilative soil saturation coefficient of transmissibility, comprising: horse
Family name's bottle, the Markov bottle lower end exit is connect by aqueduct with the bottom for the organic glass earth pillar being conveniently replaceable, described
Organic glass earth pillar in be capable of the soil sample of free wxpansion deformation after filling water suction, by leading at the top of the described organic glass earth pillar
Water pipe is connect with graduated graduated cylinder, and the stopwatch of record time, and the organic glass earth pillar is multiple and different height
Organic glass earth pillar, the soil sample thickness in each organic glass earth pillar is different.
A kind of measuring method of the dilative soil saturation coefficient of transmissibility using above system, it is assumed that it needs to be determined that with a thickness ofLDilative soil different depth coefficient of transmissibility, method includes the following steps:
The step of making organic glass earth pillar: for making multiple organic glass earth pillars, manufacturing process is as follows: will be with a thickness ofLSoil sample be divided intomLayer, thejLayer (j=1,2 ... ...,m) soil sample with a thickness ofl j ；
Soil sample is loaded in each organic glass earth pillar: according to the thickness of the layerl j (j=1,2 ... ...,m) selection production one
The soil sample of serial different-thickness is respectively filled in the organic glass earth pillar of corresponding different height, and from most short organic glass earth pillar
Start to work out organic glass earth pillar and number and isi=1,2 ... ...,m, in which: theiIn a organic glass earth pillar soil sample with a thickness ofL i :
；
The step of being saturated soil sample: is takenjA soil sample with a thickness ofL j Organic glass earth pillar and Markov bottle and aqueduct connect
It connects；
Regulate and control soil sample of the Markov bottle into organic glass earth pillar slowly to supply water, makes soil sample in machine glass earth pillar from bottom to top
Saturation is progressivelyed reach, soil sample water suction free wxpansion enters next step after soil swelling stabilization；
The step of testing simultaneously recording parameters: start to be recorded with stopwatch after soil sample saturation and soil sample swell increment reach maximum value
Observation time goes out water percolating capacity with the soil sample that graduated cylinder measures the corresponding time；Record every test parameters: cross-sectional areaA j , head it is high
Poor Dh j , flowing-out timeDt j , outflowQ j ；
The step of calculating: pass through formula:
K E, j To be using numberjOrganic glass earth pillar be measured soil sample with a thickness ofL j (l 1 +l 2 +…+ l j ) when have
Imitate coefficient of transmissibility；
Calculate thejLayer (j=2 ...,m) soil sample soil saturation coefficient of transmissibility:
" the step of being saturated organic glass earth pillar " is repeated since the organic glass earth pillar that number is 1 to " the step of calculating
Suddenly ", until number ismOrganic glass earth pillar, complete the calculating of the soil saturation coefficient of transmissibility of each layer soil sample.
The beneficial effect comprise that: the present invention is saturated coefficient of transmissibility with the increasing of thickness of soil according to dilative soil
Characteristic that is big and changing selects a series of organic glass earth pillar of different heights according to test objective and requirement, loads different thickness
The pedotheque of degree, the one by one measurement of progress water saturation, by the water yield measured to each organic glass earth pillar and goes out
The calculating of the parameters such as time is flowed, final accurate calculate determines that the saturation at certain thickness dilative soil section different depth is led
Water coefficient.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 be described in the embodiment of the present invention one measure system structural schematic diagram, soil sample with a thickness ofL 1=l 1；
Fig. 2 be described in the embodiment of the present invention one measure system structural schematic diagram, soil sample with a thickness ofL 2=l 1+ l 2；
Fig. 3 be described in the embodiment of the present invention one measure system structural schematic diagram, soil sample with a thickness ofL 3=l 1+l 2+l 3。
Specific embodiment
Embodiment one:
The present embodiment is a kind of measurement system of dilative soil saturation coefficient of transmissibility, as shown in Fig. 1 ~ 3.The present embodiment packet
Include: Markov bottle 1, the Markov bottle lower end exit are connected by the bottom of aqueduct and the organic glass earth pillar 2 being conveniently replaceable
It connects, is capable of the soil sample 201 of free wxpansion deformation in the organic glass earth pillar after filling water suction, soil sample can be disturbed using interior
It breaks ground, field undisturbed soil can also be used, connected by aqueduct with graduated graduated cylinder 3 at the top of the organic glass earth pillar
It connects, and the stopwatch of record time, the organic glass earth pillar is the organic glass earth pillar of multiple and different height, each organic
The soil of corresponding thickness is loaded in glass earth pillar, the soil sample thickness in each organic glass earth pillar is different.
Markov bottle exit described in the present embodiment is connected to organic glass earth pillar bottom by the aqueduct, to institute
The soil sample stated in organic glass earth pillar slowly supplies water, it is made to progressively reach saturation from bottom to top.At the top of the organic glass earth pillar
The aqueduct is connected, puts a graduated cylinder immediately below the aqueduct outlet.When the soil sample in the organic glass earth pillar by
Under to after above entirely reaching saturation, moisture will be oozed out from the top of the organic glass earth pillar, by the aqueduct will seep
The water of soil sample imports the graduated cylinder out.It is calculated in certain period by the stopwatch from the water that exudation is flowed into graduated cylinder in soil sample
Amount.Dilative soil saturation coefficient of transmissibility changes with the increase of thickness of soil, according to test objective and requirement, selects a series of
The organic glass earth pillar of different height, loads the pedotheque of different-thickness, is tested one by one, most by certain method
The saturation coefficient of transmissibility determined at dilative soil section different depth is calculated eventually.
According to test objective and requirement, designmThe organic glass earth pillar of a different height allows its height slightly above to fill
Thickness of soil (prevent cause because of soil swelling soil overflow earth pillar) is filled out, ascending according to filling thickness of soil, from 1 ~ mIt is right
The organic glass earth pillar is numbered.Soil is packed into the organic glass earth pillar, if numberiThe organic glass earth pillar
Middle thickness of soil isL i (i=1,2 ...,m)；
It is tested since the organic glass earth pillar of number 1.The Markov bottle exit passes through the aqueduct and institute
The bottom for stating organic glass earth pillar is connected, and the air-dried soil in Xiang Suoshu organic glass earth pillar slowly supplies water, and makes soil sample under
Saturation, soil sample free wxpansion are progressivelyed reach upwards.An institute is put immediately below the aqueduct outlet that organic glass earth pillar top connects
State graduated cylinder.When the soil sample in the organic glass earth pillar entirely reaches saturation from top to bottom, moisture will be oozed out from soil sample,
It is flowed into the graduated cylinder by the aqueduct.After soil water sorption dilatancy is stablized, start to test, when recording using stopwatch
Between, exudation water etc. is recorded using graduated cylinder.
According to aforesaid operations process, successively to number 2 ~mA organic glass earth pillar is tested, and each test is carried out
Data record work, (swell increment for being equal to the soil body in the organic glass earth pillar herein reaches maximum to the thickness including soil
Thickness of soil after value)L, soil cross-sectional areaA, head height difference Dh, certain period DtThe water of interior exudation soilQ。
The present embodiment piping connection very simple, key are the filling of multi-layer Soil.Organic glass earth pillar is by cylinder
The organic glass shell of shape and the end cap at both ends are constituted.The plexiglass cylinder profile of cylinder, both ends can be used in organic glass shell
End cap be also possible to organic glass.End cap is closed at both ends by cylinder, and the through-hole of connecting pipeline is arranged on end cap.
The height of organic glass earth pillar is related with the soil sample thickness of inside filling, and soil sample thickness is thicker, organic glass earth pillar
Height it is higher.
For the soil saturation coefficient of transmissibility for accurately obtaining each depth, need to be arranged the organic glass of multiple and different height
Earth pillar, and be numbered from low to high to organic glass earth pillar, form a series of organic glass earth pillar of different heights.
It is 3 organic glass earth pillars as shown in Fig. 1 ~ 3.Number is respectively 1,2,3:
Organic glass earth pillar in Fig. 1 is filled with thickness of soil and isl 1Dilatancy soil sample, form number be 1 it is organic
Glass earth pillar.
Organic glass earth pillar in Fig. 2 is filled with thickness of soil and isL 2=l 1+l 2Dilatancy soil sample, foring number is 2
Organic glass earth pillar.
Organic glass earth pillar in Fig. 3 is filled with thickness of soil and isL 3=l 1+l 2+l 3Dilatancy soil sample, form number
For 3 organic glass earth pillar.
Embodiment two:
The present embodiment is a kind of measuring method of the dilative soil saturation coefficient of transmissibility of institute's system in use, principle
It is:
For saturated soil sample, if giving it to supply water with fix-head, after waterflow stabilization, according to Darcy's law:
(1)
(2)
In formula,qFor water flux density,cm/s；K s For soil saturation coefficient of transmissibility,cm/s；DtFor flowing-out time,s；QTo go out
Flow,cm 3；AFor soil cross-sectional area,cm 2；DhFor head height difference,cm；LFor thickness of soil,cm。
Joint type (1) and (2) can obtain:
(3)
By formula (3) be calculated with a thickness ofLSoil saturation coefficient of transmissibilityK s , that is, with a thickness ofLSoil
Effective coefficient of transmissibilityK e , it may be assumed that
(4)
For dilative soil, saturation coefficient of transmissibility changes with the increase of thickness of soil.With a thickness ofL i Soil
Earth, effective coefficient of transmissibility when entire soil layer reaches saturation areK e .If the soil is divided intonLayer, then thejLayer (j=1,
2 ... ...,n) soil layer saturation coefficient of transmissibilityK j WithK e There are following relationship (assuming thatjLayer thickness of soil very little,jSoil is swollen in layer
Bulk is identical, and coefficient of transmissibility is not with change in depth):
(5)
When whole thickness of soil very little, pressure and soil body self gravity equal very little of the upper layer of soil to lower soil, soil
Earth can achieve maximum value under the action of expansive force with free wxpansion, soil swelling amount, at this point, can regard flood soil as
One layer, then:
(6)
When flood thickness of soil is larger, need for flood soil to be further subdivided into a thickness ofL i 'sj(i=2,
3 ... ...,n) layer soil, whenL j When sufficiently small, it can incite somebody to actionL j The soil body in layer regards homosphere (soil saturation water guide system in soil layer as
Number does not change with change in depth).
So, using formula (4) ~ (6), it is based on said determination system, may be implemented by following measuring methods to expansion
Soil saturation coefficient of transmissibility Accurate Determining at property soil profile different depth.Steps are as follows:
It 1) will be with a thickness ofLSoil be divided intonLayer enables thejLayer (j=1,2 ... ...,n) soil with a thickness ofl j (note: each
Stratified soil thickness wants sufficiently small)；
2) according to the thickness of the layer and hierarchy number, the number of the organic glass earth pillar is determinedm, productionmA different-thickness
Soil sample.To a series of organic glass earth pillars from 1 ~ mIt is numbered, if numberiThe organic glass earth pillar in soil
Earth with a thickness ofL i (i=1,2 ... ...,m):
(7)
3) it is tested using the organic glass earth pillar of number 1, soil thickness isL 1=l 1.Measure the cross section of soil
ProductA 1, head height difference Dh 1, flowing-out time, outflowQ 1.Calculating soil thickness using formula (4) isL 1(l 1) when soil have
Imitate coefficient of transmissibilityK e,1.Soil layer overall thickness is smaller in the earth pillar for being 1 due to number, flood soil can be regarded to one layer as, then it is led
Water coefficient=K e,1。
4) the organic glass earth pillar of number 2, soil thickness areL 2=l 1+l 2.Measure the cross-sectional area of soilA 2, head it is high
Poor Dh 2, flowing-out time, outflowQ 2.It is calculated using formula (4)L 2=(l 1+l 2) the effective coefficient of transmissibility of soilK e,2.Into one
Step combines the coefficient of transmissibility of the 1st layer of soil being calculated to be, it is calculated using formula (5)。
5) it repeats the above steps, then for originalmLayer soil, obtain the 1st, 2 ...,mThe coefficient of transmissibility of -1 layer of soil、、K (m-1), can obtainK m 。
The process that the present embodiment carries out detection test is: slow by soil sample of the Markov bottle into organic glass earth pillar first
It supplies water, it is made to progressively reach saturation, soil water sorption free wxpansion from bottom to top.When the soil sample in organic glass earth pillar entirely reaches
After saturation, moisture will be oozed out from the top of organic glass earth pillar, and the water for oozing out soil sample is imported graduated cylinder by aqueduct.When
Soil saturation and soil swelling amount start to test after reaching maximum value (that is: stabilization), with stopwatch hourly observation time, dosage
Cylinder measures corresponding time water yield.Fully consider that dilative soil saturation coefficient of transmissibility changes with the increase of thickness of soil,
The thickness and delamination according to soil are needed in this measurement system, and a series of organic glass earth pillar of different heights is set, by
It is a to carry out repeating to test measure and calculation.
In the present embodiment, measurement with a thickness ofl、The number of plies ismSoil, the 1st ~mLayer in each layer coefficient of transmissibility (Fig. 1,
2,3 be respectively withm=1、m=2、m=3 as signal).The calculating of continuous mode is as follows:
It 1) will be with a thickness oflSoil be divided intomLayer, thejLayer (j=1,2 ... ...,m) soil with a thickness ofl j ；
2) according to the thickness of the layerl j (j=1,2 ...,m) select to make a series of soil sample of different-thickness, filling is corresponding
In the organic glass earth pillar of height.If number isiOrganic glass earth pillar in thickness of soil beL i (i=1,2 ... ...,m):
(7)
Soil is loaded by certain bulk density in each organic glass earth pillar, one by one each organic glass earth pillar is unfolded to survey
Examination.
3) the organic glass earth pillar of number 1 is tested first, soil thickness isL 1=l 1.Measure the cross-sectional area of soilA 1, head height difference Dh 1, flowing-out time, outflowQ 1.Soil thickness, which can be obtained, isL 1(l 1) when the effective coefficient of transmissibility of soilK e,1:
(8)
This soil layer thickness of soil is sufficiently small, is regarded as one layer of soil layer, coefficient of transmissibility=K e,1。
4) 2 organic glass earth pillar of number is tested, soil thickness isL 2=l 1+l 2.Measure the cross-sectional area of soilA 2、
Head height difference Dh 2, flowing-out time, outflowQ 2.Soil thickness, which can be obtained, isL 2(l 1+l 2) when the effective coefficient of transmissibility of soilK e,2:
(9)
In conjunction with formula (6) ~ (8), can obtain:
(10)
At this point,、L 2 、l 1 、l 2 、It is known that can acquire:
(11)
Then for originalmFor layer soil, the hydraulic conductivity of its the 1st, 2 layer of soil is measured、；
5) by step 3) and step 4) successively to number be 3 ~n(n=m) organic glass earth pillar determine.For
It is formermFor layer soil, thejLayer (j=2 ... ...,m) soil hydraulic conductivityAre as follows:
(j=2 ... ...,m) (12)
In formula,It is for thickness of soil(l 1+l 2+…+ l j ) when effective coefficient of transmissibility, be using numberjHave
Machine glass earth pillar is measured.
(13)
In conclusion for originalmFor layer soil, can measure and calculation obtain itsjThe hydraulic conductivity of layer soil(j=1,
2 ... ...,m).
Specific step is as follows for method described in the present embodiment:
The step of making organic glass earth pillar: for making multiple organic glass earth pillars, manufacturing process is as follows:
It will be with a thickness oflSoil sample be divided intomLayer, thejLayer (j=1,2 ... ...,m) soil sample with a thickness ofl j 。mSize is by expanding
Property soil physical properties determine that it is more generally to deform biggish soil layering, it is less to deform lesser layering, but be layered it is more,
It measures more acurrate.
Soil sample is loaded in each organic glass earth pillar: according to the thickness of the layerl j Selection makes a series of different-thickness
Soil sample is respectively filled in the organic glass earth pillar of corresponding different height, and is numbered from most short organic glass earth pillar, isi=1,
2 ... ...,m, in which: theiIn a organic glass earth pillar soil sample with a thickness ofL i :
；
The step of being saturated soil sample: is takenjA soil sample with a thickness ofL j Organic glass earth pillar and Markov bottle and aqueduct connect
It connects.
Regulate and control soil sample of the Markov bottle into organic glass earth pillar slowly to supply water, makes soil sample in machine glass earth pillar from bottom to top
Saturation is progressivelyed reach, soil sample water suction free wxpansion enters next step after soil swelling stabilization.
The step of testing simultaneously recording parameters: start to be recorded with stopwatch after soil sample saturation and soil sample swell increment reach maximum value
Observation time goes out water percolating capacity with the soil sample that graduated cylinder measures the corresponding time；Record every test parameters: cross-sectional areaA j , head it is high
Poor Dh j , flowing-out timeDt j , outflowQ j ；
The step of calculating: pass through formula:
K E, j To be using numberjOrganic glass earth pillar be measured soil sample with a thickness ofL j (l 1 +l 2 +…+ l j ) when have
Imitate coefficient of transmissibility.
Calculate thejLayer (j=2 ...,m) soil sample soil saturation coefficient of transmissibility:
。
" the step of being saturated organic glass earth pillar " is repeated since the organic glass earth pillar that number is 1 to " the step of calculating
Suddenly ", until number ismOrganic glass earth pillar, complete the calculating of the soil saturation coefficient of transmissibility of each layer soil sample.
Finally it should be noted that being only used to illustrate the technical scheme of the present invention and not to limit it above, although referring to preferable cloth
The scheme of setting describes the invention in detail, those skilled in the art should understand that, it can be to technology of the invention
Scheme (such as the elder generation of the utilization of the connection type, various formula between measuring appliance used in system, each utensil, step
Sequence etc. afterwards) it is modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention.
Claims (2)
1. a kind of measurement system of dilative soil saturation coefficient of transmissibility characterized by comprising Markov bottle, the geneva
Bottle lower end exit is connect by aqueduct with the bottom for the organic glass earth pillar being conveniently replaceable, in the organic glass earth pillar
Be capable of the air-dried soil sample of free wxpansion after filling water suction, at the top of the organic glass earth pillar by aqueduct with graduated
Graduated cylinder connection, and the stopwatch of record time, which is characterized in that the organic glass earth pillar is the organic of multiple and different height
The soil sample of glass earth pillar, the different soil properties of soil sample in each organic glass earth pillar is layered filling, forms multiple soil layers:
According to test objective and requirement, designmThe organic glass earth pillar of a different height allows its height slightly above to load soil
Earth thickness, to prevent from causing soil to overflow earth pillar because of soil swelling；It is ascending according to filling thickness of soil, from 1 ~ mTo described
Organic glass earth pillar is numbered, and soil is packed into the organic glass earth pillar, if numberiThe organic glass earth pillar in soil
Earth with a thickness ofL i (i=1,2 ...,m)；
Test is until number since the organic glass earth pillar of number 1mOrganic glass earth pillar；The Markov bottle exit
It is connected by the aqueduct with the bottom of the organic glass earth pillar, the air-dried soil in Xiang Suoshu organic glass earth pillar is slow
It is slow to supply water, so that soil sample is progressivelyed reach saturation, soil sample free wxpansion, the aqueduct connected from organic glass earth pillar top from bottom to top
A graduated cylinder is put immediately below outlet, when the soil sample in the organic glass earth pillar entirely reaches saturation from top to bottom, moisture
It will ooze out from soil sample, be flowed into the graduated cylinder by the aqueduct, after soil water sorption dilatancy is stablized, be started real
It tests, records the time using stopwatch, record exudation water using graduated cylinder.
2. a kind of measuring method of the dilative soil saturation coefficient of transmissibility using system described in claim 1, which is characterized in that
The method includes the following steps:
The step of making organic glass earth pillar: for making multiple organic glass earth pillars, manufacturing process is as follows:
It will be with a thickness ofLSoil sample be divided intomLayer, thejLayer (j=1,2 ... ...,m) soil sample with a thickness ofl j ；
Soil sample is loaded by certain bulk density in each organic glass earth pillar: according to the thickness of the layerl j (j=1,2 ... ...,m) selection
A series of soil sample for making different-thickness is respectively filled in the organic glass earth pillar of corresponding different height, and from most short organic glass
Glass earth pillar is numbered, and isi=1,2 ... ...,m, in which: theiIn a organic glass earth pillar soil sample with a thickness ofL i :
；
The step of being saturated soil sample: is takenjA soil sample with a thickness ofL j Organic glass earth pillar connect with Markov bottle and aqueduct；
Regulate and control soil sample of the Markov bottle into organic glass earth pillar slowly to supply water, make soil sample in organic glass earth pillar from bottom to top by
Gradually reach saturation, the basic free wxpansion of soil sample water suction enters next step after soil swelling stabilization；
The step of testing simultaneously recording parameters: start after soil sample saturation and soil sample swell increment reach maximum value with stopwatch hourly observation
Time goes out water percolating capacity with the soil sample that graduated cylinder measures the corresponding time；Record every test parameters: cross-sectional areaA j , head height difference h j , flowing-out time t j , outflowQ j ；
The step of calculating: pass through formula:
K E, j To be using numberjOrganic glass earth pillar be measured soil sample with a thickness ofL j (l 1 +l 2 +…+ l j ) when effectively lead
Water coefficient；
Calculate thejLayer (j=2 ...,m) soil sample soil saturation coefficient of transmissibility:
" the step of being saturated organic glass earth pillar " to " the step of calculating " is repeated since the organic glass earth pillar that number is 1,
Until number ismOrganic glass earth pillar, complete the calculating of the soil saturation coefficient of transmissibility of each layer soil sample.
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| CN109000967A (en) * | 2018-09-20 | 2018-12-14 | 中国水利水电科学研究院 | The System and method for of the acquisition of native stone binary medium earth pillar and hydrologic parameter measurement |
| CN111307692A (en) * | 2020-04-24 | 2020-06-19 | 兰州交通大学 | Unsaturated expansive soil permeability coefficient and expansive force measuring device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727731Y (en) * | 2004-03-31 | 2005-09-21 | 田波 | Multifunctional road material infiltration gauge |
| CN101915690A (en) * | 2010-08-26 | 2010-12-15 | 中国科学院东北地理与农业生态研究所 | Soil column freeze-thaw simulation device and soluble component extraction method based thereon |
| CN201876408U (en) * | 2010-11-02 | 2011-06-22 | 同济大学 | Multifunctional permeameter |
| JP2013148351A (en) * | 2012-01-17 | 2013-08-01 | Daiki Rika Kogyo Kk | Water permeability testing apparatus and water permeability testing facility |
| CN103926179A (en) * | 2014-02-27 | 2014-07-16 | 新疆水利水电科学研究院 | Asphalt concrete permeability detector |
| CN204789259U (en) * | 2015-06-16 | 2015-11-18 | 山西省交通科学研究院 | Device of test silt osmotic coefficient |
| CN205749508U (en) * | 2016-06-30 | 2016-11-30 | 宁夏农林科学院 | A kind of layer-stepping soil-column test device |
-
2017
- 2017-02-22 CN CN201710095164.0A patent/CN106706501B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727731Y (en) * | 2004-03-31 | 2005-09-21 | 田波 | Multifunctional road material infiltration gauge |
| CN101915690A (en) * | 2010-08-26 | 2010-12-15 | 中国科学院东北地理与农业生态研究所 | Soil column freeze-thaw simulation device and soluble component extraction method based thereon |
| CN201876408U (en) * | 2010-11-02 | 2011-06-22 | 同济大学 | Multifunctional permeameter |
| JP2013148351A (en) * | 2012-01-17 | 2013-08-01 | Daiki Rika Kogyo Kk | Water permeability testing apparatus and water permeability testing facility |
| CN103926179A (en) * | 2014-02-27 | 2014-07-16 | 新疆水利水电科学研究院 | Asphalt concrete permeability detector |
| CN204789259U (en) * | 2015-06-16 | 2015-11-18 | 山西省交通科学研究院 | Device of test silt osmotic coefficient |
| CN205749508U (en) * | 2016-06-30 | 2016-11-30 | 宁夏农林科学院 | A kind of layer-stepping soil-column test device |
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